C14's aren't slow.They don't perform acceleration wise, to the level of super/hyper sports bikes, or muscle bikes. They will in most cases kick the crap out of other makes in the Sport Touring group. They are comfortable for touring at all legal speeds, 45-80+ MPH, unlike those designed to be track bikes. Personally I have no idea what KHI will do, but if I really wanted a rocket, I would go for the new S1000RR, as a go faster, and keep my 14 for sane riding.
FWIW, not being derogatory towards the ZX14R, but having owned a ZZR1200, hyper sport bikes just aren't my thing, any longer, just no fun for me under 100MPH, and those speed are assured to cost me dearly with money or possibly my life.